Losses in bus-bars and enclosures of gas insulated switchgears (GIS)

• Autorzy: Novák B. , Koller L.
• Konferencja: Computer Applications in Electrical Engineering 2009 [Poznan, 20-22 April, 2009]
• Języki publikacji: EN

Abstrakty

EN

The magnetic field produced by alternating currents flowing in the bus-bars of switchgears induces eddy currents in the metal parts nearby. The metal enclosure around these bars is also exposed to this magnetic field, therefore currents, namely power losses within it are ineluctable. Depending on the material and the switchgear's geometry, the non-uniform current density-, hence the power loss distribution and the total loss can be different in the different phase conductors and in the enclosure. As the analytical modeling of a complex geometry is practically impossible, another approach should be adopted to determine these parameters. This can be the finite element (FE) calculation method. The results of such calculations on the 2D models of one high voltage and one medium voltage GIS are presented in this paper.

Słowa kluczowe

EN

gas insulated switchgears; busbars; electromagnetic field; switchgear

PL

GIS; szyny zbiorcze; pole elektromagnetyczne; aparatura rozdzielcza

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Poznan University of Technology Academic Journals. Electrical Engineering
• Rocznik: 2009
• Tom: No 60
• Strony: 87--96
• Opis fizyczny: Bibliogr. 9 poz.

Twórcy

autor

Novák B.

autor

Koller L.

• Budapest University of Technology and Economics

Bibliografia

• [1] K. Simonyi: Foundations of Electrical Engineering. Oxford: Pergamon Press Ltd. 1963.
• [2] H. B. San Segundo, V. F. Roig: Reduction of low voltage power cables electromagnetic field emission in MV/LV substations. Electric Power Systems j Research 78, Elsevier 2008. pp. 1080-1088.
• [3] EN 50160, Voltage characteristics of electricity supplied by public distribution systems, 1999.
• [4] Gy. Tevan: Aramkiszoritasi modellek az erösäramü elektrotechnikäban (Current displacement models in electric power engineering). Budapest Univ. of Techn. 1985.
• [5] L. R. Nejman: Powerhnostnyjeffekt w ferromagnitnyh telah (Skin effect in ferromagnetic bodies).Gosudarstwennoe Energeticzeskoe Uzdatelstwo, Leningrad, Moscow, 1949.
• [6] W. MacLean: Theory of strong Electromagnetic Waves in Massive Iron. Journal of Applied Physics, New York, Vol. 25. Oct. 1954. pp.1267-1270.
• [7] L. Koller: Untersuchung der elektrischen Parameter von Induktionstiegelöfen - die Wirkung der Einsatzparameter. Workshop. Elektromagnetische Verfahrenstechniken. 1 Technische Universität Ilmenau. 18.-19. Okt. 2001. pp. 18/1-8.
• [8] ICNIRP - International Commission on Non-Ionizing Radiation Protection: Guidelines for limiting exposure to time varying electric, magnetic and electromagnetic fields (up to 300 GHz), Health Physics 74, 1998, 4, pp. 494-522.
• [9] Directive 2004/40/EC of the European Parliament and of the Council of 29 April 2004 on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (electromagnetic fields) (18th individual Directive within the meaning of Article 16 (1) of Directive 89/391/EEC) European Parliament; Council of the European Union.